Question

Janie flips a coin 70 times and records if it comes up heads. If getting heads is a success, what is the probability of a failure? 0.2 0.5 0.7 1.00

Answer 1

The correct answer is 0.5

Answer 2

Answer:

          The probability of failure is:

                         0.5

Step-by-step explanation:

It is given that:

Janie flips a coin 70 times and records if it comes up heads.

Also, getting of a head is considered as a success.

This means that getting a tail will be a failure for the experiment.

As we know that for a unbiased coin the probability of getting a tail; and a head are equal.

Hence, the probability of head is: 1/2=0.5

and probability of tail is:   1/2=0.5

           Hence, the probability of a failure is: 0.5